- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Conowingo: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Conowingo
Power plant · Hydro
Key facts
Power plant · Hydroran 33% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1928
- Net generation, 2025
- 1,548,934 MWh
- Grid
- 220 kV to PECO Energy Co (PJM)
- Location
- Harford County, Maryland
- Operated by
- Constellation Power, IncSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 1,548,934
MWh - Fuel burned, 2025
- 5,284,963
MMBtu - Capacity factor, 2025
- 33.3
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2026 (8 of 12 months) | 1,165,865 | 3,977,932 | — | — |
| 2025 | 1,548,934 | 5,284,963 | 33.3% | — |
| 2024 | 1,831,180 | 6,247,987 | 39.3% | — |
| 2023 | 1,829,381 | 6,241,849 | 39.3% | — |
| 2022 | 1,756,565 | 5,993,401 | 37.8% | — |
| 2021 | 2,097,157 | 18,547,258 | 45.1% | — |
| 2020 | 1,673,169 | 14,668,673 | 35.9% | — |
| 2019 | 2,161,865 | 19,251,409 | 46.5% | — |
| 2018 | 2,788,408 | 25,385,666 | 60.0% | — |
| 2017 | 1,935,422 | 17,831,043 | 41.6% | — |
| 2016 | 1,369,003 | 12,638,637 | 29.4% | — |
| 2015 | 1,597,488 | 14,886,990 | 34.4% | — |
| 2014 | 1,594,647 | 15,165,093 | 34.3% | — |
| 2013 | 1,699,398 | 16,213,954 | 36.5% | — |
| 2012 | 1,639,132 | 15,597,980 | 35.2% | — |
| 2011 | 2,518,452 | 24,469,280 | 54.2% | — |
| 2010 | 1,645,359 | 16,052,123 | 35.4% | — |
| 2009 | 1,867,012 | 18,222,036 | 40.2% | — |
| 2008 | 1,908,046 | 18,801,886 | 40.9% | — |
| 2007 | 1,629,690 | 16,107,857 | 35.0% | — |
| 2006 | 2,086,191 | 20,692,929 | 44.9% | — |
| 2005 | 1,689,863 | 16,896,940 | 36.3% | — |
| 2004 | 2,474,017 | 24,794,598 | 53.1% | — |
| 2003 | 2,598,021 | 26,606,333 | 55.9% | — |
| 2002 | 1,638,114 | 16,664,534 | 35.2% | — |
| 2001 | 1,165,233 | 12,040,353 | 25.1% | — |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.
Sources
3 sourcesSources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)